標題: Bioinspired assembly of functional block-copolymer nanotemplates
作者: Lin, I. -Hong
Cheng, Chih-Chia
Chuang, Wei-Tsung
Chen, Jem-Kun
Jeng, U. -Ser
Ko, Fu-Hsiang
Chu, Chih-Wei
Huang, Chih-Feng
Chang, Feng-Chih
材料科學與工程學系
應用化學系
Department of Materials Science and Engineering
Department of Applied Chemistry
公開日期: 2013
摘要: A new concept on bioinspired assembly of functional diblock copolymers, capable of forming different microstructures through nucleobase-induced supramolecular interactions, has been explored. In this paper, a new series of uracil-functionalized poly(epsilon-caprolactone)-b-(4-vinylbenzyl uracil)s (PCL-b-PVBU) have been prepared which exhibit a high self-complementary ability in solution and solid states owing to the formation of uracil-uracil pairs by induced hierarchical self-assembly. The ordered morphologies of PCL-b-PVBU diblock copolymers changed from a lamellar, hexagonally packed cylinder to a sphere with respect to the content of the hydrogen bond segment. Moreover, we further show that the PCL segment could be easily extracted by enzymatic degradation, leading to a cylinder porous structure of long-range order, which gives a facile method for the fabrication of uracil-functionalized nanotemplates. In addition, bio-complementary PCL-b-PVBU/9-hexadecyladenine (AC16) hierarchical supramolecular complexes formed through strong cooperative hydrogen bonding between the uracil group of PVBU and the adenine group of A-C16. When the mixing ratios of PCL-b-PVBU/AC16 differ from the stoichiometric ratio, these complexes self-assemble into well-ordered lamellar and hexagonal structures; the changing morphology at different AC16 loadings reveals that the molecular structures of the PCL-b-PVBU/AC16 complexes are readily tailored.
URI: http://hdl.handle.net/11536/22821
http://dx.doi.org/10.1039/c3sm51870a
ISSN: 1744-683X
DOI: 10.1039/c3sm51870a
期刊: SOFT MATTER
Volume: 9
Issue: 40
起始頁: 9608
結束頁: 9614
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